Description:
------------
Even if the directory does not exist, you will get the same warning as a path that does not apply to open_basedir.


Test script:
---------------
<?php
$dir_safe = __DIR__.'/dir.' . basename(__FILE__,'.php') . '.safe';
ini_set('open_basedir',"{$dir_safe}/");
file_put_contents("{$dir_safe}/test.txt","shall work");


Expected result:
----------------
Warning: file_put_contents(/FOO/dir.new.safe/test.txt): failed to open stream: No such file or directory in /FOO/test.php on line 4

Actual result:
--------------
Warning: file_put_contents(): open_basedir restriction in effect. File(/FOO/dir.new.safe/test.txt) is not within the allowed path(s): (/FOO/dir.new.safe/) in /FOO/new.php on line 4

Warning: file_put_contents(/FOO/dir.new.safe/test.txt): failed to open stream: Operation not permitted in /FOO/new.php on line 4